CN213980648U - Mixed drill bit with preposed conical teeth - Google Patents
Mixed drill bit with preposed conical teeth Download PDFInfo
- Publication number
- CN213980648U CN213980648U CN202022863432.9U CN202022863432U CN213980648U CN 213980648 U CN213980648 U CN 213980648U CN 202022863432 U CN202022863432 U CN 202022863432U CN 213980648 U CN213980648 U CN 213980648U
- Authority
- CN
- China
- Prior art keywords
- bit
- tooth
- drill bit
- blades
- row
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Earth Drilling (AREA)
Abstract
The utility model relates to a leading hybrid bit of toper tooth belongs to oil, natural gas geological drilling and uses hybrid bit technical field, including the drill bit body, is fixed with multi-disc wing, bit leg and the cone of rotation connection on the bit leg on the terminal surface of drill bit body. The blade is provided with a front tooth row and a rear tooth row, the front tooth row comprises conical teeth which are arranged at intervals, and the rear tooth row is a diamond composite sheet which is arranged at intervals. The utility model provides a mixed drill bit is arranged through arranging the preceding row of teeth of toper tooth on the wing, and the preceding row of teeth that will lay the toper tooth sets up the front side at the back row of teeth of laying diamond compact piece. The conical teeth are arranged in front of the diamond composite sheet, so that the depth of the diamond composite sheet entering a stratum is limited, the stress of the diamond composite sheet is reduced, the impact resistance of the diamond composite sheet is enhanced, the overall impact resistance of the hybrid drill bit is improved, and the service life of the hybrid drill bit is prolonged.
Description
Technical Field
The application relates to the technical field of hybrid drill bits for geological drilling of petroleum and natural gas, in particular to a hybrid drill bit with preposed conical teeth.
Background
At present, in petroleum, natural gas and geological drilling, a PDC drill bit and an insert roller bit PDC mixed drill bit are mainly adopted for drilling. Due to the progress of material science, PDC drill bits are more and more widely applied to homogeneous strata and soft and hard staggered strata. The insert cone PDC mixed drill bit has the advantages of high mechanical drilling speed of the PDC drill bit, low torque and stable drilling of the cone drill bit, has an increasingly wide application range, and is mainly applied to interlayer drilling, gravel-containing stratum and directional drilling at present.
When the embedded roller PDC hybrid drill bit drills in a gravel stratum and a flint tuberculosis stratum, due to the non-uniformity of the hardness of the gravel stratum or the flint tuberculosis stratum, when the roller crushes the stratum in advance, the single gravel or flint tuberculosis is often extruded between the roller and the blades, and the conventional embedded roller PDC hybrid drill bit causes the PDC composite sheet to be easily impacted by the gravel or flint tuberculosis extruded to the annular space to break teeth, so that the drill bit fails.
Meanwhile, in some interlayer stratums, due to space limitation, the PDC composite sheet of the inner cone part is difficult to cover by the cutter cutting annulus, so that the PDC composite sheet of the inner cone is easy to break teeth in the drilling process, and further the conventional insert cutter PDC mixed drill bit is caused to have core-out failure.
Disclosure of Invention
The embodiment of the application provides a mixed drill bit with front-arranged conical teeth to solve the problem that the conventional PDC mixed drill bit with the inserted roller cones in the related art is prone to be impacted and broken by gravel or flint concretions extruded to annular space due to the front-arranged PDC composite pieces, so that the drill bit fails.
The embodiment of the application provides a leading hybrid drill bit of conical tooth, includes:
the bit body is fixed with a plurality of blades, bit legs and a cone rotatably connected to the bit legs on the end surface of the bit body;
the utility model discloses a diamond blade, including sword wing, front teeth row and back teeth row, the front teeth row is laid on the blade and is arranged with the back teeth, the front teeth row is including interval arrangement's toper tooth, back teeth row is interval arrangement's diamond compact piece.
In some embodiments: the blade is sequentially divided into an inner cone, a nose part, a shoulder part and a gauge section from inside to outside along the radial direction of the bit body;
the front tooth row of the blade is provided with conical teeth in an inner cone, a nose part and a shoulder part, and the diamond compact is arranged in the gauge protection section.
In some embodiments: the blade is sequentially divided into an inner cone, a nose part, a shoulder part and a gauge section from inside to outside along the radial direction of the bit body;
preceding tooth row still includes the diamond compact piece, the preceding tooth row of wing lays in interior cone the toper tooth, the preceding tooth row of wing lays at nose, shoulder and gauge section diamond compact piece.
In some embodiments: the inner cones of the blades on the bit body extend towards the center of the bit body and are connected into a whole.
In some embodiments: and chip grooves are formed among the blades on the drill bit body, and nozzles are arranged in the chip grooves.
In some embodiments: the bit leg is located between two adjacent blades, the upper end of the bit leg is connected with the bit body into a whole, the lower end of the bit leg is provided with a shaft diameter, and the cone is sleeved on the shaft diameter through a bearing.
In some embodiments: the height difference of the rock breaking depth of the conical teeth of the front tooth row and the diamond compact of the rear tooth row is-2 mm.
In some embodiments: the track of the rotation of the conical teeth of the front tooth row around the central line of the drill body and the track of the diamond compact of the rear tooth row on a rock breaking annulus at the bottom of the well are in the same track or different tracks.
In some embodiments: the cutter blade is provided with four blades, the four blades are divided into two groups, each group is provided with two blades, the tooth palm is provided with two teeth, and the two tooth palms are located between the two groups of blades.
In some embodiments: the cutter wing is provided with three blades, the bit leg is provided with three teeth, and the three tooth legs are respectively positioned between the three blades.
The beneficial effect that technical scheme that this application provided brought includes:
the embodiment of the application provides a mixed drill bit with front-mounted conical teeth, which is provided with a drill bit body, wherein a plurality of blades, a tooth leg and a cone rotatably connected to the tooth leg are fixed on the end surface of the drill bit body. The blade is provided with a front tooth row and a rear tooth row, the front tooth row comprises conical teeth which are arranged at intervals, and the rear tooth row is a diamond composite sheet which is arranged at intervals.
Therefore, the mixed drill bit of this application is through arranging the preceding row of teeth of toper tooth on the wing, and the preceding row of teeth that will lay the toper tooth sets up the front side at the back row of teeth of laying diamond compact. The conical teeth are arranged in front of the diamond composite sheet, so that the depth of the diamond composite sheet entering a stratum is limited, the stress of the diamond composite sheet is reduced, the impact resistance of the diamond composite sheet is enhanced, and the overall impact resistance of the hybrid drill bit is improved.
In addition, the conical teeth are arranged in front of the diamond composite sheets, so that the diamond composite sheets positioned on the rear tooth rows of the blades are helped to resist and block the impact of gravel or flint nodules in the stratum, the impact resistance of the diamond composite sheets is improved, and the service life of the hybrid drill bit is prolonged.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a structural perspective view of a hybrid swivel of an embodiment of the present application in an inverted state;
FIG. 2 is a top view of the inverted hybrid swivel according to the embodiment of the present application;
FIG. 3 is a perspective view of an inverted hybrid swivel according to another embodiment of the present application;
fig. 4 is a top view of an inverted hybrid swivel according to another embodiment of the present disclosure.
Reference numerals:
101. a bit body; 102. a blade; 103. a nozzle; 104. a diamond compact; 105. a cone; 106. a bit leg; 107. a tapered tooth; 108. a roller cone cutting element.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The embodiment of the application provides a conical tooth front-arranged hybrid drill bit, which can solve the problem that the conventional PDC hybrid drill bit with inserted roller cones in the related art is easy to be impacted and broken by gravel or flint tuberculosis extruded to annular space due to the front-arranged PDC composite pieces, so that the drill bit fails.
Referring to fig. 1-4, embodiments of the present application provide a tapered tooth advanced hybrid drill bit, comprising:
the bit body 101 is characterized in that a plurality of blades 102, a bit leg 106 and a roller cone 105 rotatably connected to the bit leg 106 are fixed on the end surface of the bit body 101, the roller cone 105 is an insert roller cone or a steel roller cone, and a plurality of rows of roller cone cutting teeth 108 are arranged on the roller cone 105.
In the direction of rotation of bit body 101, a leading row of teeth and a trailing row of teeth are disposed on blades 102, the leading row of teeth scraping and breaking rock formation ahead of the trailing row of teeth. Wherein, the front tooth row comprises tapered teeth 107 which are arranged at intervals, and the rear tooth row is a diamond compact 104 which is arranged at intervals.
The hybrid drill according to the embodiment of the present application arranges the front row of teeth on which the conical teeth 107 are arranged on the blade 102, and the front row of teeth on which the conical teeth 107 are arranged is disposed on the front side of the rear row of teeth on which the diamond compact 104 is arranged. The conical teeth 107 are arranged in front of the diamond compact 104, so that the depth of the diamond compact 104 entering the stratum is limited, the stress of the diamond compact 104 is reduced, the shock resistance of the diamond compact 104 is enhanced, and the overall shock resistance of the hybrid drill bit is improved.
In addition, by arranging the conical teeth 107 in front of the diamond compact 104, the conical teeth 107 help the diamond compact 104 located in the rear row of blades to resist the impact of gravel or flint nodules in the formation, improving the shock resistance of the diamond compact 104, preventing the diamond compact 104 from breaking tooth failure, and improving the service life of the hybrid drill bit.
In some alternative embodiments: referring to fig. 1 and 2, the embodiment of the present application provides a hybrid drill with front-mounted tapered teeth, in which four blades 102 are provided, and the four blades 102 are divided into two groups, and each group is provided with two blades 102. The four blades 102 are divided into an inner cone, a nose, a shoulder and a gauge protection section from inside to outside in sequence along the radial direction of the bit body 101.
Two bit legs 106 are provided, two bit legs 106 are respectively positioned between two adjacent groups of blades 102, and the upper ends of the bit legs 106 are connected with the bit body 101 into a whole. The lower end of the bit leg 106 is provided with a shaft diameter, the cone 105 is sleeved on the shaft diameter through a bearing, two cones 105 are arranged, and the two cones 105 are respectively positioned on the two bit legs 106.
The front tooth row of the blade 102 is provided with conical teeth 107 at the inner cone, the nose part and the shoulder part, and the front tooth row of the blade 102 is provided with a diamond compact at the gauge protection section. The front tooth row of the blade 102 is provided with the conical teeth 107 on the inner cone, the nose part and the shoulder part, the conical teeth 107 cover the rock breaking track of the diamond compact 104 of the rear tooth row, the depth of the diamond compact 104 entering the stratum is limited, the stress of the diamond compact 104 is reduced, the impact resistance of the diamond compact 104 is enhanced, and the whole impact resistance of the hybrid drill bit is improved.
In some alternative embodiments: referring to fig. 3 and 4, the embodiment of the present application provides a hybrid drill with front-mounted cone teeth, and the blades 102 of the hybrid drill are provided with three blades, and the three blades 102 are radially and uniformly arranged on the end surface of the drill body 101. The three blades 102 are divided into an inner cone, a nose, a shoulder and a gauge protection section from inside to outside in sequence along the radial direction of the bit body 101.
Three bit legs 106 are arranged, three bit legs 106 are respectively positioned between two adjacent blades 102, the upper ends of the bit legs 106 are connected with the bit body 101 into a whole, the lower ends of the bit legs 106 are provided with shaft diameters, the cone 105 is sleeved on the shaft diameters through bearings, three cones 105 are arranged, and the three cones 105 are respectively positioned on the three bit legs 106.
The front row of teeth also includes diamond compacts 104, the front row of teeth of blades 102 laying on the inner cone with tapered teeth 107, the front row of teeth of blades 102 laying on the nose, shoulder and gage sections with diamond compacts 104. Since the crush zone of cone 105 covers the nose and shoulder portions of blades 102, cone 105 is able to pre-crush diamond compacts 104 of the nose and shoulder portions. Thus, this embodiment lays the cone teeth 107 on the inner cone not covered by the crush zone of cone 105, and the cone teeth 107 protect the diamond compact 104 with the back row of teeth in the inner cone region.
In some alternative embodiments: referring to fig. 1 through 4, embodiments of the present application provide a tapered tooth advanced hybrid drill bit having a bit body 101 with the inner cones of a plurality of blades 102 extending toward the center of the bit body 101 and integrated therewith.
The inner cones of the blades 102 of this embodiment extend toward the center of the bit body 101 and are connected into a whole, and the tapered teeth 107 at the inner cone position complete rock breaking by punching, thereby effectively dispersing the stress at the inner cone position. With the continuous rotation of the hybrid bit, the tapered teeth 107 continuously punch the formation, pre-relieving the formation stress, and preventing the inner cone from producing a core.
In some alternative embodiments: referring to fig. 2 and 4, the embodiment of the present application provides a hybrid drill with a front-mounted tapered tooth, in which a flute is formed between a plurality of blades 102 on a drill body 101, and a nozzle 103 is formed in the flute. Six nozzles 103 are provided in this embodiment.
The nozzles 103 are used to spray drilling fluid to cool and lubricate the drilling tool, reduce the temperature of the drilling tool, reduce the wear of the drilling tool, and increase the service life of the drilling tool. Meanwhile, the drilling fluid sprayed out of the nozzle 103 can directly break or assist in breaking rock through a high-speed jet formed by the nozzle 103.
In some alternative embodiments: referring to fig. 1 and 3, the embodiment of the present application provides a hybrid drill with front-mounted cone teeth, in which the height difference between the rock breaking depth of the cone teeth 107 of the front tooth row and the rock breaking depth of the diamond compacts 104 of the rear tooth row is-1 mm, that is, the diamond compacts 104 of the rear tooth row protrude out of the cone teeth 107 of the front tooth row.
Or the difference of the rock breaking depth height of the conical teeth 107 of the front tooth row and the diamond compact 104 of the rear tooth row of the hybrid drill is 1mm, namely the conical teeth 107 of the front tooth row protrude out of the diamond compact 104 of the rear tooth row.
Or the height difference of the rock breaking depth of the conical teeth 107 of the front tooth row and the diamond compact 104 of the rear tooth row of the hybrid drill bit is 0mm, namely the rock breaking depth of the conical teeth 107 of the front tooth row and the rock breaking depth of the diamond compact 104 of the rear tooth row are the same.
The track of the rotation of the conical teeth 107 of the front tooth row around the central line of the bit body 101 is in the same orbit with the rock breaking zone of the diamond compact 104 of the rear tooth row at the bottom of the well.
Principle of operation
The embodiment of the application provides a hybrid drill bit with front-mounted conical teeth, and the hybrid drill bit is provided with a bit body 101, wherein a plurality of blades 102, a tooth leg 106 and a cone 105 rotatably connected to the tooth leg 106 are fixed on the end surface of the bit body 101. The blade 102 is provided with a front row of teeth including tapered teeth 107 arranged at intervals and a rear row of teeth including diamond compacts 104 arranged at intervals.
Therefore, the hybrid drill of the present application arranges the front row of teeth on which the conical teeth 107 are arranged on the front side of the rear row of teeth on which the diamond compact 104 is arranged, by arranging the front row of teeth of the conical teeth 107 on the blade 102. The conical teeth 107 are arranged in front of the diamond compact 104, so that the depth of the diamond compact 104 entering the stratum is limited, the stress of the diamond compact 104 is reduced, the shock resistance of the diamond compact 104 is enhanced, and the overall shock resistance of the hybrid drill bit is improved.
In addition, by arranging the conical teeth 107 in front of the diamond compact 104, the diamond compact 104 in the rear row of blades is helped to resist the impact of gravel or flint nodules in the formation, the shock resistance of the diamond compact 104 is improved, and the service life of the hybrid drill bit is prolonged.
In the description of the present application, it should be noted that the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience in describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present application. Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
It is noted that, in the present application, relational terms such as "first" and "second", and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The above description is merely exemplary of the present application and is presented to enable those skilled in the art to understand and practice the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A tapered tooth leading hybrid drill bit, comprising:
the bit body (101), wherein a plurality of blades (102), a bit leg (106) and a cone (105) rotatably connected to the bit leg (106) are fixed on the end surface of the bit body (101);
tooth row and back tooth row before having laid on wing (102), preceding tooth row is including interval arrangement's toper tooth (107), back tooth row is interval arrangement's diamond compact piece (104).
2. A tapered tooth advanced hybrid drill bit as defined in claim 1 wherein:
the blade (102) is sequentially divided into an inner cone, a nose part, a shoulder part and a gauge section from inside to outside along the radial direction of the bit body (101);
the front tooth row of the blade (102) is provided with the conical teeth (107) in an inner cone, a nose part and a shoulder part, and the diamond compact (104) is arranged in the diameter-keeping section.
3. A tapered tooth advanced hybrid drill bit as defined in claim 1 wherein:
the blade (102) is sequentially divided into an inner cone, a nose part, a shoulder part and a gauge section from inside to outside along the radial direction of the bit body (101);
the front tooth row further comprises a diamond compact (104), the front tooth row of the blade (102) is arranged on the inner cone of the conical tooth (107), and the front tooth row of the blade (102) is arranged on the nose portion, the shoulder portion and the gauge protection section of the diamond compact (104).
4. A tapered tooth advanced hybrid drill bit as claimed in claim 2 or 3 wherein:
the inner cones of the blades (102) on the bit body (101) extend towards the center of the bit body (101) and are integrated into a whole.
5. A tapered tooth advanced hybrid drill bit as defined in claim 1 wherein:
a chip groove is formed among the blades (102) on the bit body (101), and a nozzle (103) is arranged in the chip groove.
6. A tapered tooth advanced hybrid drill bit as defined in claim 1 wherein:
the bit leg (106) is located between two adjacent blades (102), the upper end of the bit leg (106) is connected with the bit body (101) into a whole, the lower end of the bit leg (106) is provided with a shaft diameter, and the cone (105) is sleeved on the shaft diameter through a bearing.
7. A tapered tooth advanced hybrid drill bit as defined in claim 1 wherein:
the height difference between the rock breaking depth of the conical teeth (107) of the front tooth row and the rock breaking depth of the diamond compact (104) of the rear tooth row is-2 mm.
8. A tapered tooth advanced hybrid drill bit as defined in claim 1 wherein:
the track of the rotation of the conical teeth (107) of the front tooth row around the central line of the bit body (101) and the track of the diamond compact (104) of the rear tooth row at the rock breaking zone at the bottom of the well are in the same track or different tracks.
9. A tapered tooth advanced hybrid drill bit as defined in claim 1 wherein:
the cutter blade is characterized in that the cutter blades (102) are provided with four blades, the four blades (102) are divided into two groups, each group is provided with two cutter blades (102), the number of the tooth legs (106) is two, and the two tooth legs (106) are located between the two groups of the cutter blades (102).
10. A tapered tooth advanced hybrid drill bit as defined in claim 1 wherein:
the cutter wing (102) is provided with three blades, the number of the bit legs (106) is three, and the three bit legs (106) are respectively located between the three blades (102).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022863432.9U CN213980648U (en) | 2020-11-30 | 2020-11-30 | Mixed drill bit with preposed conical teeth |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022863432.9U CN213980648U (en) | 2020-11-30 | 2020-11-30 | Mixed drill bit with preposed conical teeth |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213980648U true CN213980648U (en) | 2021-08-17 |
Family
ID=77239427
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022863432.9U Active CN213980648U (en) | 2020-11-30 | 2020-11-30 | Mixed drill bit with preposed conical teeth |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213980648U (en) |
-
2020
- 2020-11-30 CN CN202022863432.9U patent/CN213980648U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103080458B (en) | There is the drill bit that anti-drill bit follows old groove structure | |
| CA2805146C (en) | Composite drill bit | |
| US6053263A (en) | Cutting element tip configuration for an earth-boring bit | |
| EP2486217B1 (en) | Hole opener with hybrid reaming section | |
| US6098730A (en) | Earth-boring bit with super-hard cutting elements | |
| US10352101B2 (en) | Composite drill bit | |
| WO2011043985A2 (en) | Hole opener with hybrid reaming section | |
| KR20060135780A (en) | Anti-tracking earth boring bit with selected varied pitch for overbreak optimization and vibration reduction | |
| CN102022084B (en) | Compound single cone bit | |
| CA2477576C (en) | A single cone bit with offset axis and composite cones | |
| CN203669757U (en) | PDC drilling bit adaptive to stratums of various lithologic characters and various rigidities | |
| CN213627443U (en) | Polycrystalline diamond compact bit with butterfly-shaped cloth teeth | |
| CN213980648U (en) | Mixed drill bit with preposed conical teeth | |
| CN213205556U (en) | Mixed drill bit capable of preventing inner cone from being discharged | |
| EP0898044B1 (en) | Rotary drag-type drill bit with drilling fluid nozzles | |
| CN213980647U (en) | Conical tooth mixed drill bit | |
| CN205532304U (en) | PDC drill bit suitable for mudstone stratum | |
| CN212105759U (en) | Retreat platform type shoulder strengthening PDC drill bit | |
| CN203729884U (en) | Diamond-impregnated drill bit with arc teeth | |
| EP2486218B1 (en) | Hole opener with hybrid reaming section | |
| CN116517475B (en) | Novel wear-resistant and anti-collision beak-shaped tooth multi-blade PDC drill bit | |
| CN212508084U (en) | Insert cone and PDC (polycrystalline diamond compact) mixed drill bit | |
| CN218407320U (en) | Impact-resistant PDC drill bit | |
| CN220909600U (en) | High-impact PDC drill bit | |
| CN217538586U (en) | High-impact-resistance anti-coring hybrid drill bit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |